Supplemental Disclosure of Noncash Investing and Financing Activities Statement - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Supplemental Disclosure of Noncash Investing and Financing Activities [Abstract]
Noncash or Part Noncash Acquisition, Investments Acquired	$ 2,000,000.0	$ 3,100,000
Noncash or Part Noncash Acquisition, Net Unsettled Security Trades	700,000	3,400,000
Property, Plant and Equipment
Other Significant Noncash Transactions [Line Items]
Accrued Liabilities	$ 800,000	$ 0